Cisco Small Business SPA300 Series and SPA500 Series IP Phones Web UI Vulnerabilities

CVE numbers = CVE-2024-20450 and CVE-2024-20451 and CVE-2024-20452 and CVE-2024-20453 and CVE-2024-20454

Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an attacker to execute arbitrary commands on the underlying operating system or cause a denial of service (DoS) condition.

Cisco has not released software updates that address these vulnerabilities.

There are no workarounds that address these vulnerabilities.

CVE-2024-20450, CVE-2024-20452, and CVE-2024-20454: Cisco Small Business SPA300 Series and SPA500 Series IP Phones Web UI Arbitrary Command Execution Vulnerability

Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system with root privileges.

These vulnerabilities exist because incoming HTTP packets are not properly checked for errors, which could result in a buffer overflow. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to overflow an internal buffer and execute arbitrary commands at the root privilege level.

Cisco has not released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Bug ID(s): CSCwk31988
CVE ID: CVE-2024-20450, CVE-2024-20452, and CVE-2024-20454
Security Impact Rating (SIR): High
CVSS Base Score: 9.8
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2024-20451 and CVE-2024-20453: Cisco Small Business SPA300 Series and SPA500 Series IP Phones Web UI DoS Vulnerability

Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly.

These vulnerabilities exist because HTTP packets are not properly checked for errors. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the remote interface of an affected device. A successful exploit could allow the attacker to cause a DoS condition on the device.

Cisco has not released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Bug ID(s): CSCwk31988
CVE ID: CVE-2024-20451 and CVE-2024-20453
SIR: High
CVSS Base Score: 7.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-http-vulns-RJZmX2Xz